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參數(shù)資料
| 型號： | AMIS-720442-A |
| 英文描述： | 400dpi Contact Image Sensor |
| 中文描述： | 400dpi的接觸式圖像傳感器 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大小： | 391K |
| 代理商： | AMIS-720442-A |
AMIS-720442-A: 400dpi Contact Image Sensor
Data Sheet
Table 4: Electro-Optical Characteristics at High Frequency
Red 660 LED Bar, A6 PCB in A6 Module Housing, at 5.0MHz Clock
Parameters
Line scanning rate
Clock frequency
Output voltage
Output voltage non-uniformity
Dark output voltage
Dark output non-uniformity
Adjacent pixel non-uniformity
LED bar input voltage
LED bar Input current
Table 5: Electro-Optical Characteristics at High Frequency
Y-G LED Bar, A6 PCB in A6 Module Housing, at 2.0MHz Clock
Parameters
Line scanning rate
Clock frequency
Output voltage
Output voltage non-uniformity
Dark output voltage
Dark output non-uniformity
Adjacent pixel non-uniformity
LED bar input voltage
LED bar input current
Table 6: Electro-Optical Characteristics at High Frequency
Y-G LED Bar, A6 PCB in A6 Module Housing, at 5.0MHz Clock
Parameters
Line scanning rate
Clock frequency
Output voltage
Output voltage non-uniformity
Dark output voltage
Dark output non-uniformity
Adjacent pixel non-uniformity
LED bar input voltage
LED bar input current
Notes:
(1)
Note 1 under
integration time
.
(2)
Fclk is the module’s clock, CP, frequency and is equal to the pixel rate. Also, the clock duty cycle is set to 25 percent for the 2.0MHz clock frequency and set to 50
percent for the 5.0MHz.
(3)
Vpavg =
∑
Vp(n)/Npixels (average level in one line scan).
Where
Vp(n) is the amplitude of n
pixel in one line scan of the modules. Npixels is the total number of pixels in the module, i.e., 13 die x 128 pixels. The
amplitude of Vpavg is adjusted with RIN (which installed in th
The low-cost production LED’s light power are known to vary as much as ± 30%.
Up is the uniformity specification, measured under a uniform exposing light exposure. Up = [Vp(max) - Vpavg] / Vpavg x 100% or [Vpavg - Vp(min)] / Vpavg} x
100%, whichever is greater.
Where
Vp(max) is the maximum pixel output voltage in the light.
Vp(min) is the minimum pixel output voltage in the dark.
The pixel Vp(n) is one n
th
pixel in Npixels in the sensor.
In applying the Up definition, Npixels must change. It must include 13
Additionally, because the low-cost LED power variation can be high as ±
worst because of the LED bar CIS modules.
Vd =
∑
Vp(n)/Npixels. Where Vp(n) is the pixels signal amplitude of the n
th
pixel of the sensor. Dark is where light is off, leaving the image surface unexposed.
Ud = Vdmax – Vdmin.
(7)
Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n)) x 100%. Upadj is the non-uniformity in percentage. It is the amplitude difference between two neighboring pixels.
powers are widely specified, worst case as high as ± 30%, hence, the requirement for the Vpavg gain control and the wide U
(8)
The low-cost LED light
specifications.
Symbols
Tint
Fclk
(2)
Vpavg
(3)
Up
(4)
Vd
(5)
Ud
(6)
Upadj
(7)
VLED
(8)
ILED
(8)
Typical
334
5
0.5
±
20
<180
<80
<20
5.0
90
Units
μ
s/line
MHz
V
%
mV
mV
%
V
mA
Remarks
13 die in the scan, see Note 1 (bottom of Table 6)
Amplifier gain = 1.0, see Note 3
LED bar non-unif
ormit
LED power varies
greatl
LED power varies
greatl
y, see Note 4
y, see Note 8
y, see Note 8
Symbols
Tint
Fclk
(2)
Vpavg
(3)
Up
(4)
Vd
(5)
Ud
(6)
Upadj
(7)
VLED
(8)
ILED
(8)
Typical
835
2
0.4
±
20
<15
<15
<20
5.0
380
Units
μ
s/line
MHz
V
%
mV
mV
%
V
mA
Remarks
13 die in the scan, see Note 1 (bottom of Table 6)
Amplifier gain = 1.0, see Note 3
LED bar non-unif
ormit
LED power varies
greatl
LED power varies
greatl
y, see Note 4
y, see Note 8
y, see Note 8
Symbols
Tint
Fclk
(2)
Vpavg
(3)
Up
(4)
Vd
(5)
Ud
(6)
Upadj
(7)
VLED
(8)
ILED
(8)
Typical
334
5
0.2
±
25
<160
<60
<20
5.0
380
Units
μ
s/line
MHz
V
%
mV
mV
%
V
mA
Remarks
13 die in the scan, see Note 1 (bottom of Table 6)
Amplifier gain = 1.0, see Note 3
LED bar non-unif
ormit
LED power varies
greatl
LED power varies
greatl
y, see Note 4
y, see Note 8
y, see Note 8
Table 2, is a valid d
cept that in the A6 modules
efinition, ex
3 sensors sequ
k for the minimum
e production module) on all of CIS modules because of variations caused by the LED light sources.
(4)
sensors, or 13x128 pixels.
30%, the non-uniformities may varies as much as ± 30%. Hence the uniformities are
(5)
(6)
p
has 1
entially cascaded, hence, Tint = (13X128)/Fcl
11
AMI Semiconductor
– May 06, M-20571-001
www.amis.com
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